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TABLE 5 <br /> EVALUATION MATRIX FOR RETAINED REMEDIAL ALTERNATIVES <br /> CANCUN RESTAURANT <br /> 135 EAST MINER AVENUE <br /> STOCKTON,CALIFORNIA <br /> Alternative 1 Alternative 2 <br /> Evaluation Criteria Soil Vapor Extracton In-Situ Chemical Injection/Oxidation <br /> A chemical to promote chemical oxidation and/or <br /> 1) Description of Alternative Soil vapors are extracted from nearby vapor extraction wells bioremediation(hydrogen peroxide,ORC compound,etc) <br /> using a vacuum blower. Extracted soil vapor is treated using is injected into the ground via injection rods or wells. <br /> vapor-phase carbon adsorbers or a thermal/catalytic oxidizer. <br /> This alternative provides an adequate level of protection of <br /> human health,the environment,and beneficial uses of ground- <br /> and surface waters. <br /> Level of Protection of Human Health, <br /> 2) theEnvironment,and Beneficial Uses of Impmentation will slightly increase the potential exposure to Same as Alternative 1 <br /> Groundwater and Surface Waters humans and the environment. This potential exposure would <br /> be Imiited to a moderate time span,and can be controlled by <br /> monitoring in accordance with permit requirements,and <br /> propert training of construction and 0&M personnel <br /> This alternative can reduce concentrations of petroleum <br /> 3) Reduction of Petroleum Hydrocarbons <br /> This alternative is typically effective at reducing concentrations hydrocarbons in vadose and saturated zones,but may <br /> of petroleum hydrocarbons in vadose zone soils. require very close injection point spacing,and/or <br /> multiple applications. <br /> Moderately difficult to implement. Requires power, Moderately difficult to implement. Requires Waste <br /> installation of additional vapor extraction wells,and Discharge Permit,bench scale testing,extensive <br /> 4) Implentation and Operation construction/O&M of treatment system. Typically some monitoring and sampling,liklely multiple applications <br /> disruption to business operation durig installation and startup will be required with multiple encroachment/excavation <br /> of system. permits for subject project. <br /> Cost Range=$150,000-$300,000(dependent on number of <br /> 5) Cost Effectiveness(Assumes 1 year of extraction wells required and whether fixed-based system Anticipated to be Similar as Alternative 1,but would <br /> remediation) required,which will not be known until after pilot testing require pilot testing to more accurately estimate. <br /> conducted) <br /> This alternative can be implemented within regulatory <br /> 6) Compliance with Regulatory Guidelines guidelines Same as Alternative 1 <br /> This alternative is anticipated to be effective in the short term <br /> 7) Short Term Effectiveness given the relatively small size of the release and only 15 foot This alternative is not anticipated to be as effective as <br /> Altnative 1 in the short term. <br /> thick vadose zone. <br /> 8) Long Term Effectiveness This alternative is anticipated to be effective in the long term This alternative is more likely to be effective in the long <br /> term. <br /> No community acceptance problems are anticipated for this <br /> 9) Community Acceptance Same as Alternative 1 <br /> alternative <br /> FREY Environmental, Inc. Table 5 1092-01 <br />